Amazon CLF-C02 Online Practice Questions and Exam Preparation

Amazon CLF-C02 Online Questions & Answers

• Question 201:

  A company website is experiencing DDoS attacks.

  Which AWS service can help protect the company website against these attacks?

  A. AWS Resource Access Manager
  B. AWS Amplify
  C. AWS Shield
  D. Amazon GuardDuty
  C. AWS Shield

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  Explanation

  AWS Shield is a managed DDoS protection service that safeguards applications running on AWS from distributed denial of service (DDoS) attacks. DDoS attacks are malicious attempts to disrupt the normal functioning of a website or application by overwhelming it with a large volume of traffic from multiple sources. AWS Shield provides two tiers of protection: Standard and Advanced. AWS Shield Standard is automatically enabled for all AWS customers at no additional cost. It protects your AWS resources, such as Amazon CloudFront, AWS Global Accelerator, and Amazon Route 53, from the most common and frequently occurring network and transport layer DDoS attacks. AWS Shield Advanced is an optional paid service that provides additional protection for your AWS resources and applications, such as Amazon Elastic Compute Cloud (Amazon EC2), Elastic Load Balancing (ELB), Amazon Simple Storage Service (Amazon S3), Amazon Relational Database Service (Amazon RDS), and AWS Elastic Beanstalk. AWS Shield Advanced offers enhanced detection and mitigation capabilities, 24/7 access to the AWS DDoS Response Team (DRT), real-time visibility and reporting, and cost protection against DDoS-related spikes in your AWS bill12

  References: AWS Shield, What is a DDOS Attack and How to Protect Your Site Against One

• Question 202:

  Which option is a pillar of the AWS Well-Architected Framework?

  A. Patch management
  B. Cost optimization
  C. Business technology strategy
  D. Physical and environmental controls
  B. Cost optimization

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  Explanation

  The AWS Well-Architected Framework helps you understand the pros and cons of decisions you make while building systems on AWS. By using the Framework, you will learn architectural best practices for designing and operating reliable, secure, efficient, and cost-effective systems in the cloud. The Framework consists of five pillars: operational excellence, security, reliability, performance efficiency, and cost optimization2.

• Question 203:

  A customer runs an On-Demand Amazon Linux EC2 instance for 3 hours, 5 minutes, and 6 seconds.

  For how much time will the customer be billed?

  A. 3 hours, 5 minutes
  B. 3 hours, 5 minutes, and 6 seconds
  C. 3 hours, 6 minutes
  D. 4 hours
  B. 3 hours, 5 minutes, and 6 seconds

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  Explanation

  AWS bills On-Demand Amazon Linux EC2 instances in one-second increments, with a minimum of 60 seconds. Since the instance ran for more than one minute, billing is based on the exact duration it was running. Therefore, the customer will be billed for exactly 3 hours, 5 minutes, and 6 seconds. There is no rounding up to the next minute or hour.

• Question 204:

  A company deployed an application on an Amazon EC2 instance. The application ran as expected for 6 months. In the past week, users have reported latency issues. A system administrator found that the CPU utilization was at 100% during business hours. The company wants a scalable solution to meet demand.

  Which AWS service or feature should the company use to handle the load for its application during periods of high demand?

  A. Auto Scaling groups
  B. AWS Global Accelerator
  C. Amazon Route 53
  D. An Elastic IP address
  A. Auto Scaling groups

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  Explanation

  Auto Scaling groups are a feature that allows users to automatically scale the number of Amazon EC2 instances up or down based on demand or a predefined schedule. Auto Scaling groups can help improve the performance and availability of applications by adjusting the capacity in response to traffic fluctuations. AWS Global Accelerator is a service that improves the availability and performance of applications by routing traffic through AWS edge locations. Amazon Route 53 is a service that provides scalable and reliable domain name system (DNS) service. An Elastic IP address is a static IPv4 address that can be associated with an Amazon EC2 instance.

• Question 205:

  A company wants its Amazon EC2 instances to share the same geographic area but use redundant underlying power sources.

  Which solution will meet these requirements?

  A. Use EC2 instances across multiple Availability Zones in the same AWS Region.
  B. Use Amazon CloudFront as the database for the EC2 instances.
  C. Use EC2 instances in the same edge location and the same Availability Zone.
  D. Use EC2 instances in AWS OpsWorks stacks in different AWS Regions.
  A. Use EC2 instances across multiple Availability Zones in the same AWS Region.

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  Explanation

  Using EC2 instances across multiple Availability Zones in the same AWS Region is a solution that meets the requirements of sharing the same geographic area but using redundant underlying power sources. Availability Zones are isolated locations within an AWS Region that have independent power, cooling, and physical security. They are connected through low-latency, high-throughput, and highly redundant networking. By launching EC2 instances in different Availability Zones, users can increase the fault tolerance and availability of their applications. Amazon CloudFront is a content delivery network (CDN) service that speeds up the delivery of web content and media to end users by caching it at the edge locations closer to them. It is not a database service and cannot be used to store operational data for EC2 instances. Edge locations are sites that are part of the Amazon CloudFront network and are located in many cities around the world. They are not the same as Availability Zones and do not provide redundancy for EC2 instances. AWS OpsWorks is a configuration management service that allows users to automate the deployment and management of applications using Chef or Puppet. It can be used to create stacks that span multiple AWS Regions, but this would not meet the requirement of sharing the same geographic area.

• Question 206:

  A company deployed an application in multiple AWS Regions around the world. The company wants to improve the application's performance and availability.

  Which AWS service will meet these requirements?

  A. AWS Global Accelerator
  B. Amazon DataZone
  C. AWS Cloud Map
  D. AWS Auto Scaling
  A. AWS Global Accelerator

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  Explanation

• Question 207:

  Which programming languages does AWS Cloud Development Kit (AWS CDK) currently support? (Choose two.)

  A. Python
  B. Swift
  C. TypeScript
  D. Ruby
  E. PHP
  A. Python
  C. TypeScript

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  Explanation

  The AWS Cloud Development Kit (AWS CDK) currently supports multiple programming languages, including Python and TypeScript. These languages allow developers to define cloud infrastructure using familiar programming constructs. Python and TypeScript are among the first languages supported by AWS CDK, which also supports Java, C#, and JavaScript. This enables developers to use their existing programming skills and tools to define cloud infrastructure in code.

  B. Swift: Incorrect, as Swift is not currently supported by AWS CDK.

  D. Ruby: Incorrect, as Ruby is not currently supported by AWS CDK.

  E. PHP: Incorrect, as PHP is not currently supported by AWS CDK.

• Question 208:

  A company moves its infrastructure from on premises to the AWS Cloud. The company can now provision additional Amazon EC2 instances whenever the instances are required. With this ability, the company can launch new marketing campaigns in 3 days instead of 3 weeks.

  Which benefit of the AWS Cloud does this scenario demonstrate?

  A. Cost savings
  B. Improved operational resilience
  C. Increased business agility
  D. Enhanced security
  C. Increased business agility

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  Explanation

  Increased business agility is the benefit of the AWS Cloud that this scenario demonstrates. Business agility refers to the ability of a company to adapt to changing customer needs, market conditions, and competitive pressures. Moving to the AWS Cloud enables business agility by providing faster access to resources, lower upfront costs, and greater scalability and flexibility. By using the AWS Cloud, the company can launch new marketing campaigns in 3 days instead of 3 weeks, which shows that it can respond to customer feedback more quickly and efficiently. For more information, see Benefits of Cloud Computing and [Business Agility].

• Question 209:

  A company needs fully managed, highly reliable, and scalable file storage that is accessible over the Server Message Block (SMB) protocol. Which AWS service will meet these requirements?

  A. Amazon S3
  B. Amazon Elastic File System (Amazon EFS)
  C. Amazon FSx for Windows File Server
  D. Amazon Elastic Block Store (Amazon EBS)
  C. Amazon FSx for Windows File Server

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  Explanation

• Question 210:

  A company is running Amazon EC2 instances in a private subnet in a VPC.

  Which AWS service or feature can provide the EC2 instances with network connections to the internet?

  A. Gateway endpoint
  B. NAT gateway
  C. Network Load Balancer
  D. Amazon Route 53
  B. NAT gateway

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  Explanation